DJI, the world’s largest consumer drone maker based in Shenzhen, says it is opening a new research and development office in Palo Alto. The new lab will be run by two senior staff DJI hired this year: Rob Schlub, a former Apple engineer who worked on antenna design, and Darren Liccardo, a former Tesla Motors engineer who worked on autopilot systems. DJI said Mr. Schlub and Mr. Liccardo have already started recruiting engineers, and the office will eventually hire several dozen people.